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Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2018 | Dec. 31, 2016 | Apr. 02, 2016 | Dec. 31, 2016 | Dec. 31, 2018 | Dec. 31, 2017
Intangible assets with determinable lives and indefinite lives |  |  |  |  |  |
Aggregate carrying value of definite lived intangible assets |  |  |  |  | $ 60.7 | $ 5.4
Intangibles, net |  |  |  |  | $ 198.4 | 117.6
Minimum |  |  |  |  |  |
Intangible assets with determinable lives and indefinite lives |  |  |  |  |  |
Percentage fair value of each reporting unit exceeds carrying value |  |  |  |  | 90.00% |
HVAC reportable segment |  |  |  |  |  |
Intangible assets with determinable lives and indefinite lives |  |  |  |  |  |
Aggregate carrying value of definite lived intangible assets |  |  |  |  | $ 3.4 |
Trademarks |  |  |  |  | 89.3 |
Engineered Solutions reportable segment |  |  |  |  |  |
Intangible assets with determinable lives and indefinite lives |  |  |  |  |  |
Trademarks |  |  |  |  | 9.1 |
Detection and Measurement reportable segment |  |  |  |  |  |
Intangible assets with determinable lives and indefinite lives |  |  |  |  |  |
Aggregate carrying value of definite lived intangible assets |  |  |  |  | 57.3 |
Trademarks |  |  |  |  | 39.3 |
Trademarks |  |  |  |  |  |
Intangible assets with determinable lives and indefinite lives |  |  |  |  |  |
Trademarks |  |  |  |  | $ 137.7 | $ 112.2
SPX Heat Transfer Business |  |  |  |  |  |
Intangible assets with determinable lives and indefinite lives |  |  |  |  |  |
Proceeds from sale of intangible assets | $ 4.8 |  |  |  |  |
Intangibles, net | $ 0.0 |  |  |  |  |
SPX Heat Transfer Business | Trademarks |  |  |  |  |  |
Intangible assets with determinable lives and indefinite lives |  |  |  |  |  |
Impairment charge related to trademarks |  | $ 2.2 | $ 4.0 | $ 30.1 |  |

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